Extensible window-screen.



No. 700,638. Patented May 20, |902.

' W. J. GREENMAN. l

ExTENslBLE wmnow SCREEN.

Appnation med rsh. 25, 1899.)

I (No Model.)

A 770/?NE Y.

UNITED STATES ATENT QFFICE.

4WILLIAM J. GREENMAN, OF CORTLAND, NEV YORK.

EXTENSIBLE WINDOW-SCREEN.

SPECIFICATION forming part of Letters Patent No. 700,638, dated May 20, 1902.

Application filed February 25, 1899. Serial No. 706,777. (No model.)

To @ZZ whom, it may concern.-

Beit known that I, WILLIAM J. GREENMAN, a citizen of the United States, residing at Cortland, in the county of Cortland and State of New York, have 'invented certain new and useful Improvements in-Extensible Window- Screens; and I do hereby declare the following.

channels in which rollers are placed to provide for an easy and frictionless sliding move ment of the sections.

The invention further consists of the general arrangement and combination of the several parts, as will be hereinafter fully described, and particularly stated in the claim.

In the class of extensible screens,partic u larly those in which one section is designed to slide or move upon the other, great objection arises from the fact that the con struction is such as to produce unnecessary friction and binding of the parts, often necessitating a careful adjustment of the same; and one of the essential objects of my invention is to overcome this objection, and this I do by providing for an easy, uniform, and comparatively frictionless sliding movement of the two sections, free from all tendency to bind or stick. This and other objects of the invention are obtained by the means illustrated in the accompanying drawings, in which- Figure lis a perspective view of my improved window-screen, showing parts of the section broken away; Fig. 2, a vertical section on line 2 2 of Fig. l, and Fig. 3 is a longitudinal section on line 3 3 of Fig. l.

In the several views the numerals l and 2 indicate the respective sections, each of which is composed of an outer end piece 3 and side pieces et, joined together at their ends in any suitable manner, preferably by an open mortise and tenon, as shown in the drawings. The

usual inner end piece is dispensed with, and in lieu thereof a thin strip of metal bent longitudinally upon itself is employed to connect theinner-ends of the side pieces together and to form a clamping-strip 5, in which to secure the inner edge of the wire-netting. This clamping-strip is placed a short distance from the inner end of the section, and the edge of the netting is secured between the folds thereof, the sides and other edge of the netting being secured to the section in the usual manner. The outer edge of the netting is covered by a strip G, which protects said edge from injury and serves as a filling-piece to make the sides of the end piece flush with the face of the side pieces. The inner face of the side pieces of each section is provided with corresponding longitudinal grooves or channels 7 of any suitable shape, preferably angular, and in said grooves or channels are placed rollers 8, said rollers being of a size sufficient to produce a slight separation between the two sections. The rollers are preferably arranged to freely travel in the oppo-L sitely-faced grooves in the sections, thereby affording anv easy and smooth sliding movement to the sections one upon the other. Stops 9 are arranged at a suitable distance apart at the outer ends of the grooves to limit the travel of the rollers and to prevent them dropping or rolling therefrom. The sections are held in their slidable position by means of hook-guides 10 and 11, the guides 10 being secured to the side edges of the section 2 and hooking over the side edges of section l and the guides 1l being secured to the side edges .of section l and hooking over the side edges IOO Window-screen consisting of two sections slid- I Intestimony whereof I affix my signature ably connected together, one upon the other, in the presence of two Witnesses. said sections having grooves in the inner adjacent faces of the side rails, registering with WILLIAM J GREENMAN 5 each other-,rollers loosely arranged in said VVitsnesses:

grooves, and stops for retaining the rollers in JOHN W. SUGGETT, che grooves. L. P. HOLLENBEOK. 

